syzkaller login: [ 31.501402] BUG: Bad rss-counter state mm:00000000b53473fe type:MM_FILEPAGES val:33 [ 31.502752] BUG: Bad rss-counter state mm:00000000b53473fe type:MM_ANONPAGES val:22 [ 31.658634] ================================================================== [ 31.659726] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.660832] Read of size 8 at addr ffff88800d97a5c8 by task sshd/219 [ 31.661841] [ 31.662089] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.662949] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.663953] Call Trace: [ 31.664277] [ 31.664560] dump_stack_lvl+0x91/0xf0 [ 31.665054] print_report+0xcc/0x620 [ 31.665539] ? __virt_addr_valid+0x102/0x340 [ 31.666096] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.666719] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.667338] kasan_report+0xbe/0xf0 [ 31.667834] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.668465] vma_interval_tree_remove+0xc75/0xec0 [ 31.669069] vma_prepare+0xc54/0x11a0 [ 31.669554] __split_vma+0x5af/0x950 [ 31.670032] ? __pfx___split_vma+0x10/0x10 [ 31.670565] ? find_held_lock+0x2c/0x110 [ 31.671093] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.671678] ? lock_is_held_type+0x9f/0x120 [ 31.672222] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.672831] ? mtree_range_walk+0x632/0x900 [ 31.673384] ? mas_walk+0x5c7/0x7c0 [ 31.673863] do_vmi_munmap+0x1f1/0x2b0 [ 31.674357] mmap_region+0x1f9/0x2660 [ 31.674841] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.675355] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.676098] ? __pfx_lock_acquire+0x10/0x10 [ 31.676629] ? __pfx_mmap_region+0x10/0x10 [ 31.677166] ? security_mmap_addr+0x7d/0xa0 [ 31.677696] ? get_unmapped_area+0x1f5/0x3f0 [ 31.678259] do_mmap+0x854/0xf00 [ 31.678699] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.679195] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.679790] ksys_mmap_pgoff+0x3af/0x500 [ 31.680298] do_syscall_64+0x3f/0x90 [ 31.680779] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.681418] RIP: 0033:0x7f03f881bd82 [ 31.681873] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 31.684018] RSP: 002b:00007ffcf36f0398 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.684933] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f03f881bd82 [ 31.685782] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f03f7c55000 [ 31.686635] RBP: 00007f03f7c55000 R08: 0000000000000009 R09: 0000000000001000 [ 31.687497] R10: 0000000000000812 R11: 0000000000000206 R12: 00005565ce453ec0 [ 31.688353] R13: 00007ffcf36f03b0 R14: 00007ffcf36f03e0 R15: 00007ffcf36f0740 [ 31.689219] [ 31.689507] [ 31.689720] Allocated by task 212: [ 31.690148] kasan_save_stack+0x22/0x50 [ 31.690658] kasan_set_track+0x25/0x30 [ 31.691152] __kasan_slab_alloc+0x59/0x70 [ 31.691697] kmem_cache_alloc+0x16b/0x370 [ 31.692221] vm_area_dup+0x20/0x160 [ 31.692677] __split_vma+0x170/0x950 [ 31.693148] split_vma+0xc6/0x110 [ 31.693583] mprotect_fixup+0x8d2/0xb30 [ 31.694087] do_mprotect_pkey+0x87e/0xd40 [ 31.694613] __x64_sys_mprotect+0x78/0xc0 [ 31.695142] do_syscall_64+0x3f/0x90 [ 31.695627] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.696269] [ 31.696484] Freed by task 212: [ 31.696874] kasan_save_stack+0x22/0x50 [ 31.697382] kasan_set_track+0x25/0x30 [ 31.697880] kasan_save_free_info+0x2b/0x50 [ 31.698418] __kasan_slab_free+0x10a/0x190 [ 31.698953] kmem_cache_free+0x10d/0x4d0 [ 31.699474] rcu_core+0x8c8/0x2860 [ 31.699922] __do_softirq+0x1b7/0x7d4 [ 31.700405] [ 31.700620] Last potentially related work creation: [ 31.701206] kasan_save_stack+0x22/0x50 [ 31.701711] __kasan_record_aux_stack+0x8e/0xa0 [ 31.702290] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.702930] remove_vma+0x139/0x170 [ 31.703405] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.703969] do_vmi_munmap+0x1f1/0x2b0 [ 31.704484] __vm_munmap+0x138/0x3a0 [ 31.704973] __x64_sys_munmap+0x59/0x80 [ 31.705489] do_syscall_64+0x3f/0x90 [ 31.705970] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.706616] [ 31.706832] Second to last potentially related work creation: [ 31.707545] kasan_save_stack+0x22/0x50 [ 31.708085] __kasan_record_aux_stack+0x8e/0xa0 [ 31.708663] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.709304] remove_vma+0x139/0x170 [ 31.709759] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.710315] do_vmi_munmap+0x1f1/0x2b0 [ 31.710808] mmap_region+0x1f9/0x2660 [ 31.711284] do_mmap+0x854/0xf00 [ 31.711732] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.712225] ksys_mmap_pgoff+0x3af/0x500 [ 31.712744] do_syscall_64+0x3f/0x90 [ 31.713228] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.713895] [ 31.714117] The buggy address belongs to the object at ffff88800d97a570 [ 31.714117] which belongs to the cache vm_area_struct of size 168 [ 31.715627] The buggy address is located 88 bytes inside of [ 31.715627] freed 168-byte region [ffff88800d97a570, ffff88800d97a618) [ 31.717051] [ 31.717275] The buggy address belongs to the physical page: [ 31.717940] page:000000005122aa1b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd97a [ 31.719053] memcg:ffff888015de9201 [ 31.719528] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.720231] page_type: 0xffffffff() [ 31.720710] raw: 0100000000000200 ffff88800879fc80 ffffea0000365f40 dead000000000007 [ 31.721661] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888015de9201 [ 31.722587] page dumped because: kasan: bad access detected [ 31.723262] [ 31.723502] Memory state around the buggy address: [ 31.724094] ffff88800d97a480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.724965] ffff88800d97a500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 31.725834] >ffff88800d97a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.726705] ^ [ 31.727408] ffff88800d97a600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 31.728277] ffff88800d97a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.729172] ================================================================== [ 31.730160] Disabling lock debugging due to kernel taint [ 33.941623] BUG: Bad rss-counter state mm:000000003c3256cb type:MM_FILEPAGES val:33 [ 33.942773] BUG: Bad rss-counter state mm:000000003c3256cb type:MM_ANONPAGES val:22 [ 34.450195] BUG: Bad rss-counter state mm:00000000b97b8f56 type:MM_FILEPAGES val:33 [ 34.451794] BUG: Bad rss-counter state mm:00000000b97b8f56 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41260' (ECDSA) to the list of known hosts. 2023/06/19 22:59:14 fuzzer started 2023/06/19 22:59:14 dialing manager at localhost:44161 2023/06/19 22:59:14 checking machine... 2023/06/19 22:59:14 checking revisions... [ 35.113775] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:59:14 testing simple program... [ 35.151907] cgroup: Unknown subsys name 'net' [ 35.204277] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:59:13 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff814c84ed RDX=ffff8880198a9b40 RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=ffff8880198d7728 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6996 R12=0000000000000000 R13=0000000000000000 R14=ffffffff85652a88 R15=ffff888019090850 RIP=ffffffff814c0388 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f6aa851f900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f6aa8ad4650 CR3=000000000e44c000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff8880176dfa3a RCX=0000000000000000 RDX=0000000000000000 RSI=ffffffff818c2601 RDI=0000000000000005 RBP=dffffc0000000000 RSP=ffff8880176df958 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000000 R12=ffff8880176dfa28 R13=0000000000000001 R14=00007fe420000b80 R15=00007fe420000b80 RIP=ffffffff818c2629 RFL=00040246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fe426be9700 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007fd3a1686020 CR3=000000000c97a000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=5ee628a1631edcb2364ae8890b4ec8fc XMM02=ec2efd57dc4c00df000000000011dd18 XMM03=1d0e9ad56221ca6f000000000011dde8 XMM04=0792a19e2ab4c8bf00000000000ae988 XMM05=dfcdbad4f1609c3700000000001359d8 XMM06=d317f71a3d37724e0000000000134840 XMM07=e042d86d42eb936e0000000000124d68 XMM08=1d0e9ad56221ca6f000000000011dde8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000